Home / 878,929,048.41-1,212,370,372.40-521,443,731.33

Finding the Fourth Proportional to 878,929,048.41, 1,212,370,372.40 and 521,443,731.33

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Solution

The fourth proportional to 878,929,048.41, 1,212,370,372.40 and 521,443,731.33 is: 719,265,032.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,929,048.41 : 1,212,370,372.40 = 521,443,731.33 : x
  2. Step 2: Convert to fraction form
    878,929,048.41/1,212,370,372.40 = 521,443,731.33/x
  3. Step 3: Cross multiply
    878,929,048.41x = 1,212,370,372.40 × 521,443,731.33
  4. Step 4: Simplify right side
    878,929,048.41x = 632,182,930,735,590,400
  5. Step 5: Solve for x
    x = 632,182,930,735,590,400/878,929,048.41
  6. Step 6: Final answer
    x = 719,265,032.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.